cubicweb #343147 Use __message to display URL of created ticket [resolved]

Since Stay on ticket after creation form doesn't seem to be planned... Let's try a less controversial proposition.

When creating a ticket, when validation is clicked, arrive on project page but display the URL of the ticket in the __message so that we can go back to the created ticket or copy/paste the ticket's url (for an email/jabber/etc).

done in3.3.3
load left0.000
closed by<not specified>